Shade-holler



Patented Oct. 21, 1919.

INVENTOR WITNESSES James 14 Price.

A TTOHNEYS {UNITED STATES rATE r OFFICE.

, JAMES w. PRICE, or HENRYETTA, oKLAHoMA, Assrenoa or ONE-HALF 'IOI-IETTIE r.

MILLER, or HENRYETTA, OKLAHOMA.

S ADE-Rotten.

To all whom it may concern:

Be itknownthat I, JAMEs WV. PRICE, a

citizen of the United States, and a resident of Henryetta, in the countyof Okmulgee and State of Oklahoma,have invented certain new and usefulImprovements in Shade Rollers, of which the following is aspecification.

My invention is an improvement in shade rollers, and has for its objectto provide a cheap and simple roller of the character specified whereinthe operation of the'spring which rotates the roller to wind upthesh'ade is controlled by a pawl so mounted .that it will always be inposition to engage the catches of the roller, and which is' positivelyheld out of engagement .with the catches when the roller is rotatingabove a predetermined speed, and which may be easily disengaged whendesired to adjust the roller.

In the drawings:

Figure 1 is a perspective view of one end of the shade roller;

Fig. 2 is alongitudinal section Fig. 3 is an end view of the cap;

Fig. 4 is atop plan view of one end of the roller Fig. 5 is aperspective view of the pawl or latch bar.

In the present embodiment of the invention the roller l, which is ofwood, carries the, shade 2 which is secured thereto in the usual mannerand winds thereon, and one end of the roller is axially cored asindicated at 3, to receive a rod 4 of metal. Thisrod carries the coilspring 5 which operates the roller, the said spring having oneendreceived in a longitudinallyextending notch 6 in the rod, while theother end is adapted to engage the cap 7 onthe end of the roller. Thiscap, as shown, has'a centralhub 8 through which the rod extends, and therod has a collar 9 which engages the end of the hub to hold the rod fromoutward movement. The outer end of therod is flattened, as shown at 10,for engagement by a similarly shaped notch in one of the brackets 11which supports the roller.

The flattened portion 10 of the rod eX- tends from the outer face of thecap to the outer end of the rod and a pawl or latch bar 12 is mounted onthis portion of the rod. This pawl or latch bar has a longitudinallyextending slot 13 through which the flattened portion of the rod passes,and a plate Specification of Letters Patent. Patented Oct. 21', 1919.Application filed February 6, 1919. Serial No. 275,423. [I i 14 isarranged on the flattened portion at the the flattened portion of therod, that'is,

from above downwardly mounted in the brackets.

Catch lugs 15 are provided on the end of the cap, and thesaid lugs areadapted to be engaged by either end of the pawl, and the said ends arebeveled in opposite directions as indicated at 16, to provide 'camsurfa'ces for riding upon other lugs '17, one o f'which is arrangedadjacent to each lug 15 and in front of the same, so that when the pawlis moving in one direction, that is, when the shade is moving upwardly,the ends of the pawl will engage these cams 17, and will be lifted overthe catch lugs'15. v v When the curtain is moving at a moderate rate ofspeed, the cam lugs 17 will cause the pawl to over-ride the lugs '15, sothat there can be no sticking or stoppage of thec'ur tain untilydesired.As soon as the speed of the curtain is slowed sufficiently, the pawlwill swing into engagement with thecatch lugs, it being noted that thereis space between each pair o'f lugs 15 and 17 for this purpose. V K vReferring to Fig. 5, it will be noted that the ends of the slot 13 arebeveled in opposite directions, as indicated at 18, and the bevel-' ingis outward from the end of the roller. Thuswhen the pawl hangs inthe'position of Fig, 2, the lower end will be swung in ward by thebeveled end of the slot, to pro,

when the roller is and the catch IugsfThe convex surface'of the plate 1spermits-this rocking movement of the pawl. In placing the roller in thebrackets,- the trunnion 10 may beengaged from either edge, since thepawl is reversible, working equally well in either position enough tocause the engaging end of the latch to move backwardly over the adjacentvide a positive engagement between the pawl cam lug to freely releasethe roller. As soon as the downward pull on the curtain is relaXed, thespring will wind up the roller, and the pawl will swing freely over thecatch lugs, being positively lifted over the lugs by the cam lugs.

With the improved curtain, cheap wood may be used, since it is onlynecessary to core out a small opening. There are but few parts in thecatch mechanism, only five including the spring and rod. Hence thedevice may be very cheaply constructed and, although simple, it is veryefficient for the purpose, absolutely preventing sticking of the shadewhen it is permitted to move up at a fair rate of speed. 7 Slowing ofthe movement of the hade will permit the pawl to engage, bringing theshade to a halt at the desired point. The manner in which the pawl ishung upon the trunnion 10 insures always a positive engagement of thepawl with the catch lugs.

I claim:

1. In a shade roller, the combination with the roller and the springforcontrolling the same, of a pawl, said pawl being mounted to movevertically on the flat trunnion of the shade roller and being supportedto swing at its lower end toward the end of the roller, said rollercarrying catch lugs at. its ends for engagement by the pawl to hold theroller, and the roller having cam lugs adjacent to the catch lugs forlifting the engaging end of the pawl over the catch lugs when the rolleris rotating.

2. In a shade roller, the combination with the roller and the spring forcontrolling the same, of a pawl, said pawl being mounted to movevertically on the flat trunnion of the shade roller and being supportedto swing at its lower end toward the end of the roller, said rollercarrying catch lugs at its end for engagement by the pawl to hold theroller, said roller having means for lifting the engaging end of thepawl over the catch lugs when the roller is rotating. 1

3. In a shade roller, the combination with the roller and the pring forcontrolling the same, of a pawl mounted on the flat trunnion of theshade roller and having means for constraining the same to swing at itslower end toward the roller, said roller carrying catch lugs at its endsfor engagement by the pawl to hold the roller against the action Copiesof this patent may be obtained for five cents each, by addressing theCommissioner of Patents,

of the spring, and the roller having means adjacent to the catch lugsfor lifting the engaging end of the pawl from the catch lugs when theroller is rotated.

41-. In a shade roller, the combination with the roller, the spring forcontrolling the same and the fiat trunnion with which one end of thespring is connected, of a pawl mounted to swing on the trunnion andhaving means in connection therewith for swinging the lower end of thesame toward the roller, said means comprising an opening in the pawlthrough which the trunnion extends, theupper end of the opening beingbeveled outwardly and upwardly.

5. In a shade roller, the combination with the roller, the spring forcontrolling the same and the flat trunnion with which one end of thespring is connected, of a pawl mounted to swing on the trunnion andhaving means in connection therewith for winging the lower end of thesame toward the roller.

6. In a shade roller, the combination with the roller, the spring forcontrolling the same and the trunnion with which one end of the springis connected, of a pawl held on the trunnion to swing toward and fromthe roller, the shade having catch lugs for engagement by the pawl, andhavingoam' lugs for lifting the pawl over the catch lugs when the rolleris rotating, and means in connection with the pawl for normallyconstraining the same to swing toward the curtain.

7. In a shade roller, the combination with the roller, the spring forcontrolling the same and the trunnion with which one end of the springis connected, of. a pawl held on the trunnion to swing toward and fromthe roller, the shade-having catch lug for engagement by the pawl, andhaving cam lugs adjacent to the catch lugs for lifting the pawl over thecatch lugs when the roller is rotating.

8. In a shade roller, the combination with the roller and the spring forcontrolling the same, of a pawl and ratchet mechanism for controllingthe winding movement of the roller, and means in connection with saidpawl and ratchet mechanism for positively lifting the pawl over the,teeth of the ratchet when the rolleris moving in a direction to wind theroller above a predetermined speed.

JAMES W. PRICE.

Washington, I). Q,

